100212231222 has 12 divisors (see below), whose sum is σ = 217126501020. Its totient is φ = 33404077068.

The previous prime is 100212231211. The next prime is 100212231233. The reversal of 100212231222 is 222132212001.

100212231222 is a `hidden beast` number, since 1 + 0 + 0 + 212 + 231 + 222 = 666.

It is an interprime number because it is at equal distance from previous prime (100212231211) and next prime (100212231233).

It is a super-2 number, since 2×100212231222² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 5567346179 = 100212231222 / (1 + 0 + 0 + 2 + 1 + 2 + 2 + 3 + 1 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 100212231195 and 100212231204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2783673072 + ... + 2783673107.

It is an arithmetic number, because the mean of its divisors is an integer number (18093875085).

Almost surely, 2^100212231222 is an apocalyptic number.

100212231222 is an abundant number, since it is smaller than the sum of its proper divisors (116914269798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100212231222 is a wasteful number, since it uses less digits than its factorization.

100212231222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5567346187 (or 5567346184 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 100212231222 its reverse (222132212001), we get a palindrome (322344443223).

The spelling of 100212231222 in words is "one hundred billion, two hundred twelve million, two hundred thirty-one thousand, two hundred twenty-two".